<template>
	<view>
		<view class="smart-panel-head">
			<view class="smart-panel-head-title">
				text 文本组件
			</view>
			<view class="smart-padding-wrap">
				<view class="text-box">
					<text>{{text}}</text>
				</view>
				<button type="primary" :disabled="!canAdd" @click="add">add line</button><br>
				<button type="warn" :disabled="!canRemove" @click="remove">remove line</button>
			</view>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				texts:[
					'HBuilder,400万开发者选择的IDE',
					'HBuilderX,轻巧、极速,极客编辑器',
					'uni-app, 终极跨平台方案',
					'HBuilder, 400万开发者选择的IDE',
					'HBuilderX,轻巧、极速,极客编辑器',
					'uni-app, 终极跨平台方案',
					'HBuilder,400万开发者选择的IDE',
					'HBuilderX,轻巧、极速,极客编辑器',
					'uni-app,终极跨平台方案',
					'......'
				],
				text:'',
				canAdd:true,
				canRemove: false, 
				extraLine:[]
			};
		},
		methods: {
			add:function(e){
				this.extraLine.push (this.texts[this.extraLine.length % 12]);
				this.text = this.extraLine.join('\n');
				this.canAdd = this.extraLine.length < 12;
				this.canRemove = this.extraLine.length > 0;
			},
			remove:function(e){
				if (this.extraLine.length>0){		
					this.extraLine.pop();
					this.text = this.extraLine.join('\n');
					this.canAdd = this.extraLine.length < 12;
					this.canRemove = this.extraLine.length >0;
			}
		}
	}
};
</script>

<style>

</style>


